Letter to the editor (Scientific journals)
Recombination in alphaherpesviruses
Thiry, Etienne; Meurens, F.; Muylkens, Benoît et al.
2005In Reviews in Medical Virology, 15 (2, Mar-Apr), p. 89-103
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Abstract :
[en] Within the Herpesviridae family, Alphaherpesvirinae is an extensive subfamily which contains numerous mammalian and avian viruses. Given the low rate of herpesvirus nucleotide substitution, recombination can be seen as an essential evolutionary driving force although it is likely underestimated. Recombination in alphaherpesviruses is intimately linked to DNA replication. Both viral and cellular proteins participate in this recombination-dependent replication. The presence of inverted repeats in the alphaherpesvirus genomes allows segment inversion as a consequence of specific recombination between repeated sequences during DNA replication. High molecular weight intermediates of replication, called concatemers, are the site of early recombination events. The analysis of concatemers, from cells coinfected by two distinguishable alphaherpesviruses provides an efficient tool to study recombination without the bias introduced by invisible or non-viable recombinants, and by dominance of a virus over recombinants. Intraspecific recombination frequently occurs between strains of the same alphaherpesvirus species. Interspecific recombination depends on enough sequence similarity to enable recombination between distinct alphaherpesvirus species. The most important prerequisite for successful recombination is coinfection of the individual host by different virus strains or species. Consequently the following factors affecting the distribution of different viruses to shared target cells need to be considered: dose of inoculated virus, time interval between inoculation of the first and the second virus, distance between the marker mutations, genetic homology, virulence and latency. Recombination, by exchanging genomic segments, may modify the virulence of alphaherpesviruses. It must be carefully assessed for the biosafety of antiviral therapy, alphaherpesvirus-based vectors and live attenuated vaccines. Copyright (C) 2004 John Wiley Sons, Ltd.
Disciplines :
Immunology & infectious disease
Author, co-author :
Thiry, Etienne ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Virologie, épidémiologie et pathologie des maladies virales
Meurens, F.
Muylkens, Benoît ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Virologie, épidémiologie et pathologie des maladies virales
McVoy, M.
Gogev, S.
Thiry, Julien ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Virologie, épidémiologie et pathologie des maladies virales
Vanderplasschen, Alain ;  Université de Liège - ULiège > Immunologie et vaccinologie
Epstein, A.
Keil, G.
Schynts, F.
Language :
English
Title :
Recombination in alphaherpesviruses
Publication date :
2005
Journal title :
Reviews in Medical Virology
ISSN :
1052-9276
eISSN :
1099-1654
Publisher :
John Wiley & Sons Ltd, Chichester, United Kingdom
Volume :
15
Issue :
2, Mar-Apr
Pages :
89-103
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 March 2009

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